If you’re a higher-rate or additional-rate taxpayer, you may be owed extra pension tax relief that isn’t added automatically.
Here’s how to claim it through a Self Assessment tax return, even if you’ve never done one before.
Why do you need to claim it?
For most pension contributions, the pension provider automatically adds 20% basic-rate tax relief. But if you pay tax at 40% or 45%, you’re entitled to more.
Do you need to do a tax return?
You will need to complete a tax return if:
- You pay 40% or 45% tax and
- You pay into a personal pension or workplace pension that uses relief at source
IMPORTANT: You don’t need to complete a tax return if your workplace uses salary sacrifice or net pay. In that case, tax relief is automatic.
How to submit a tax return:
- Step 1: Register for Self Assessment (if you haven’t before)
You can do this online with HMRC. - Step 2: Log in and start your return
Login here using your Government Gateway account. - Step 3: Find the “Pension Contributions” section
This is where you enter the amount paid into your pension, including the 20% tax relief added. For example, if you paid £80 and your provider added £20, you enter £100. - Step 4: HMRC calculates your extra tax relief
This may come to you as a tax refund, reduced tax bill or an adjusted tax code (meaning more take-home pay each month). - Step 5: Submit your return
The deadline is 31st January for online returns and 31 October for paper returns.
What if you missed previous years?
You can normally claim for the last 4 tax years. This could add up to hundreds or even thousands of pounds of missed tax relief.
The takeaway
If you’re a higher-rate or additional-rate taxpayer, submitting a tax return can unlock valuable pension tax relief that would otherwise be left unclaimed.
A few minutes of paperwork can be a big boost to your pension and even a tax refund in your bank account.



